Attending Day To Day Fault, Repairing And Mtce. Of Od Type Tfr. Substation And Rewinding Of 25Kva, 11Kva/0.433 Kv Oil Cooled Tfr. With Asso. Works At Various T.E. And Mobile Bts Sites Under Sambalpur Ba For The Year 2025-26 (For Blg And Bpt Oa); 1 Attending to break down calls, physical inspection of Substation accessories, overhead lines, feeder panels, meter box etc. to find out thefaultsand taking corrective measures for restoration of power supplyi/c minor repairing works i/c replacement of insulators, LAs, jumpers, lugs/sockets etc. in coordination with supply authority etc. as required. 2 Liaison with different units of the supply authority i.e. Field units, MRT units, Division office etc.forobtaining shut down of 11KV line, breaking of meter sealif required to carry out the major repairing and maintenance works of the Transformer substation/replacement/rewinding and re-installation of the repaired Transformer, re-energisation, testing and re-commissioning etc.as required. 3 Thorough servicing of AB Switch, adjustment of bearings, male/female contacts, lubricating of movingitems i/c replacement ofminor defective parts like nuts, bolts, clamps, wire braided copper strips and checking the functional operation,etc.as required. 4 Replacement of the following defective spare parts ofthe transformer substation by new one i/c fitting, connectionetc. as reqd.(a) Male contact and Female contacts made of hard drawn copper for 200 Amps air break switch with wire braided strip etc. comprising of 3nos per set. 5 Rotor mechanism for 200 Amps air break switch. 6 Square/round bar for AB switch (Horizontal unit) 7 11KV Post Insulator for 200Amps AB switch/ HG fuse unit 8 Operating Handle made of 25/32mm Medium class GI pipe with wire braided copper strip 9 Heavy duty operating pipe for air break switch i/c fabrication etc. as required. 10 Replacement of faulty/damaged pin insulators by new oneof 11 KV grade pin type insulator with large steel head G.I. pin, nuts, washers on existing HT pole/ DP structure etc. complete as required. 11 Replacement of faulty/damaged discinsulators by new one of 11 KV, 45 KNporcelain disc insulator with galvanized insulator fittings, ball and socket type and complete with galvanized strain clamps, bolts, nuts, washers etc. as required. 12 Replacement of damaged and unserviceable AB switch of the following typeby new one of11 KV, off load, single break, triple pole, horizontal type, gang operated air break switch having 2 nos. 11 KV post type insulator per phase complete with galvanized channel iron base, arcing horns, 25 mm dia. 6mtr. long GI pipe, tinned copper wire braided flexible earthing wire & operating handle with locking arrangement etc. complete as required.(a) 200 A Horizontal type 13 (b) 400 AHorizontal type 14 Supply & drawing of 55 sqmm. AAA conductor for overhead line and DP structures i/c binding with insulators etc. complete as required. 15 Dismantling of existing faultyHT cable3 core, 11 KV grade XLPE insulated ,galvanised steel armoured earthed type 35 sqmm stranded Al conductor power cable overall PVC sheated from overheadalong with one no 55 sqmm AAAconductorload bearer wirei/cnecessary meggering /identificationof fault etc complete as required.( 1 span=30mtrs ) 16 Replacement of faulty 11KVoutdoor type cable end terminationsby new one ofheat shrinkabletype complete with all accessories including lugs suitable for 3 core, 35 sqmm, XLPE aluminium conductor cable of 11 KV grade as required. 17 Replacement of faulty/burnt outstraight through cable jointsby new one of outdoor typeheat shrinkable type complete with all accessories including lugs suitable for 3 core, 35 sqmm, XLPE aluminium conductor cable of 11 KV grade as required. 18 Rewiring of the DP structure of Transformer Sub Station with 55sqmm AAA /50sqmm insulated Al.conductor stranded cable with al. Lugs/sockets, binding with post insulators etc. complete as required. 19 Replacement of faulty/burnt out cables by new one including Laying offollowing sizesPVC insulated & PVC sheathed Aluminium conductor armoured cable 650/1100 V. grade confirming to IS : 7098 (Part-1) 1988i/c transportation to respective sites etc. as required. (a) 4 core 16 sqmm 20 4 core 25 sqmm 21 Replacement of damaged MV cable end terminationswith brass compression gland and aluminium lugs for following size of PVC insulated and PVC sheathed / XLPE aluminium conductor cable of 1.1 KV grade as required. (a) 4 X 16 sq. mm (28mm) 22 4 X 25 sq. mm (28mm) 23 Replacement of thedefective parts/components by new ones of following sizes & ratingsaluminium/copper sockets/lugsforPVC sheathed / XLPE aluminium/copper conductor cable of 1.1 KV grade i/cfixing/crimpingetc. as required. (a)16/25 sqmm Al socket. 24 35 sqmm Al socket. 25 55 sqmm Al socket. 26 Dismantling the following ratings faulty transformer from the existing D.P. structure/Plinth & installation of standby/repaired transformer i/c testing and commissioning, recording the required parameters etc. by qualified staff, arranging required tools & plant with proper precautionary measures etc. as required. (a) 25 KVA, 11KV/0.415KV, 50 Hz Aluminium wound oil cooled Transformer 27 Repairing of 25KVA Aluminium/ copper wounded transformer at site i/c opening top cover, checking the bush, inter connectionswires/strips from bushings to transformer windings, tightening the connections, etc.as required. (Rewinding of Transformer is not in the scope of this item) 28 Rewinding of the HT windings ofthe following ratings Oil immersed Distributionclass Transformerwith superior grade andsuitable size Double paper coveredTransformer winding conductor , providingre-insulation of LT winding etc. includingdismantling the transformer parts i.e. conservator tank, terminal boxes, bushings, removing the core and windings from the tank, draining of transformer oil, cleaning of tank,reassembling the core & windings and all the aforesaid parts after rewinding/repairing but excluding transformer oil, replacement of gaskets, worn out nuts, bolts and washers/cork washers etc, heating in heat chamber, carry out factory testsand submission of test reportsetc.complete as required. (The dismantled aluminium winding and other materials can be retained by the agency and credit for the same to be given in the quoted rate of this item)(a) 25 KVA, 11KV/0.415KV, 50 Hz Aluminium wound oil cooled Transformer. (Note - Transformer oil will be measured separately) 29 (b) 63 KVA, 11KV/0.415KV, 50 Hz Aluminium wound oil cooled Transformer. (Note - Transformer oil will be measured separately) 30 Supplying and pouring of transformer oil (IS:325) of suitable make & grade for topping up/replacement of old deteriorated oil etc. complete as required. 31 Replacement of damaged feeder pillar with a newly fabricated one ofsize 450mm x 350 mm x250 mm deep made having 16 SWG MS sheet, duly powder coated with superior quality enamel paint after one coat of red oxide paint to accommodate one no SDFU (Excluding cost of spare)i/c providingangle iron mounting structure for support etc i/c grouting etc complete as required . 32 Transportation of spare/new/repaired/standby 25/63 KVA transformer from BSNL office /factory /workshop to respective sites and faulty Transformer from sites to back by using suitable transportation medium including loading and unloading at both ends etc. complete as required. (The rate should be inclusive of toll gate fee/charges wherever applicable, nothing extra will be paid. Distance will be on shortest route only). (a) Distanceup to and including 50 KMs (Up and Down) 33 Distanceabove 50 KM and up to and including 100 KMs (Up and Down) 34 Distanceabove 100 KM and up to and including 150 KMs (Up and Down) 35 Distanceabove 150 KM and up to and including 200 KMs (Up and Down) 36 Supply and erection of 9 mtrs. long PSC pole (conforming to IS: 1678/ 1998 as amended up to date) with working load 300 Kg. at 600 mm from topwith earthing arrangement in no. 8 SWG GI wire including transportation of the same from factory to site, loading and un loading at both ends, errection of the same for LT line support with 1.5 mtr. planting depth, earthing arrangement in no. 8 SWG GI wire, rigidly supported at the butt end with cement concrete foundation 1:2:4(1 cement, 2 sand & 4 stone aggregate) of size 600mm x 600mm wide and 1600mm depth i/c excavation, refilling etc. complete as required. 37 Laying and drawing of existing repaired HT cable3 core, 11 KV grade XLPE insulated ,galvanised steel armoured earthed type 35 sqmm stranded Al conductor power cable overall PVC sheated on overhead along with one no 55 sqmm AAAconductorload bearer wirecomplete as required.( 1 span=30mtrs ) 38 Cuttingof trees , bushes , shrubs etc in the sub station area i/ccleaning with the help of required T&P etc cpmplete as required 39 S/FMS channel/ V Cross arms , F clamp etc of suitable size /c cutting , welding ,jointing etc i/c painting with red oxidecomplete as required 40 Reimbursement on account of payment made to TPWODL for testing fee of repaired transformer as per details given below (a) Transformer testing fee
